Dragon

Dragons are beings who can appear human or anything they wish to be. The dragon Ferrovax appeared in Grave Peril, and the slain dragon Siriothrax was discussed in Proven Guilty. Except for their immense power, very little is known about them.

According to Jim Butcher there are two types of dragons[4], distinguished by their spelling: Dragons "large D" and dragons "little d".

Dragons (with an uppercase D) are elemental forces of the cosmos in the more Asian sense of the concept, semi-divine beings who were once given authority over various portions of the mortal universe, and who were responsible for their orderly procession.

The dragons (with a regular lowercase d) are like the general concept of dragons, but they are essentially nothing but emissaries and servitors created in the image of the real thing. There are not nearly as many as there were in the past.

Both kinds of dragons almost universally resent humanity for usurping the balance of power in the world.

There are only two Dragons left as of the present day, the third having been killed by Michael Carpenter.[5]